Water Quality & Monitoring

Overview

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Water Quality Terms

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Water Quality Updates

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Water Quality Monitoring

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Courtesy Boat Inspections

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Swimmers Itch

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Gloeotrichia

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Storm Water Runoff

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Invasives

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Bathing in the Lake

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Great Pond Watershed Survey Results

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Long Pond Watershed Survey Results

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How Does a Septic System Work?

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Pristine water quality used to be a given in Great and Long Pond when the Belgrade Lakes Association was founded in 1908. Today, that's no longer the case. The responsibility to “protect and preserve” now falls on all of us who care about these lakes.

This page introduces how lakes work, what we’re doing to protect water quality, and how you — one person — can help preserve them for future generations.

🌿 Click here to explore volunteer opportunities

Metaphyton Algae Bloom, Long Pond 2021

Metaphyton Algae Bloom, Long Pond – 2025